Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Determination of Benzidines by Gas Chromatographic Separation of Derivatives with Electron Capture Detection.
Author Kawahara, F. K. ; Dunn, J. R. ; Fiutem, F. A. ; McCullough, P. J. ;
CORP Author Environmental Monitoring and Support Lab.-Cincinnati, OH.
Year Published 1982
Report Number EPA-600/J-82-011;
Stock Number PB83-116962
Additional Subjects Chemical analysis ; Gas chromatography ; Water pollution ; Water analysis ; Reprints ; Benzidines ; Water pollution detection ; Electron capture detectors
Library Call Number Additional Info Location Last
NTIS  PB83-116962 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 16p
Factors considered in the development of a method for the determination of toxic, water-soluble benzidines, involved providing a good technique for their adequate recovery, converting quantitatively the isolated amines to relatively stable derivatives suitable for measurement and storage, coupled with relative ease of preparation of the derivatives, and resolving the prepared compounds during their measurement. Benzidine and dichlorobenzidine are quantitatively extracted from wastewater and measured quantitatively through the preparation of their respective pentafluoropropionamides (PFP) by using PFP-imidazole. Overall recovery efficiency for benzidines from wastewater ranges from 91 to 103%. These derivatives are relatively stable compounds and have detection limits of 0.2 pg or less, when electron capture detection is used with gas chromatograpy. Derivatives of o-tolidine and dianisidine are also described.